Am Mo, den 21.03.2005 schrieb Alexander Volovics um 12:22: > The 'AMD Athlon64 qool'n quiet - how?' thread reminded me that there > are some questions that I would like to ask about 'cool/quiet', > 'cpufreq/cpuspeed' and/or 'powernow-k8'. > > (I am running FC3-x86_64 on a MSI K8N Neo2 Platinum mobo with AMD64 3500+). > > 'dmesg' shows the following: > powernow-k8: Found 1 AMD Athlon 64 / Opteron processors (version 1.00.09e) > powernow-k8: 0 : fid 0xe (2200 MHz), vid 0x2 (1500 mV) > powernow-k8: 1 : fid 0xc (2000 MHz), vid 0x6 (1400 mV) > powernow-k8: 2 : fid 0xa (1800 MHz), vid 0xa (1300 mV) > powernow-k8: 3 : fid 0x2 (1000 MHz), vid 0x12 (1100 mV) > > However I have only ever seen 2 freqencies in use: 1000 and 2200. > > This could because 1800/2000 are excluded from use somewhere or > because they are 'transient states', only used when switching from > 1000 to 2200. > > If 'cpuspeed' is responsible for this "exclusion" of 1800 and 2000 > it doesn't seem to be configured in /etc/cpuspeed.conf. > (Or can the OPTS entry be used for this?) > > Can somebody explain this phenomenon. cpuspeed reads the CPUID from the BIOS table. Maybe Dave can say more about this as he coded this software. > (I might not be seeing the actual workings of cpuspeed because > I only use 'cat /proc/cpuinfo' manually) I think you either don't use your CPU so that it idles at 1GHz, or you use it full speed at 2.2GHz. > Ubuntu Warty has a 'cpufreq' button for use on the panel. > Is there anything like this available for FC3/FC4? http://dag.wieers.com/packages/gnome-cpufreq-applet/ > Alexander Alexander 2 :-) -- Alexander Dalloz | Enger, Germany | GPG http://pgp.mit.edu 0xB366A773 legal statement: http://www.uni-x.org/legal.html Fedora Core 2 GNU/Linux on Athlon with kernel 2.6.10-1.770_FC2smp Serendipity 13:54:30 up 4 days, 11:50, load average: 0.44, 0.54, 0.46
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